Industrial Networking - Profibus
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This document provides an overview of PROFIBUS basics, including: - PROFIBUS allows for high-speed data exchange between active stations like PLCs and passive stations like field devices using the same cable and components. - It supports functions like parameterization, I/O configuration, data exchange, and diagnostics between a master and slave devices in a cyclic manner. - The configuration tool allows users to select parameters and I/O for devices with electronic data sheets to enable plug-and-play functionality.
![PROFIBUS Basics
Date 09/06/00, Page 7
PROFIBUS Basics
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Parameterization (continued)
Parameter selection with Configuration Tool
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Fewer DIP Switches - NO Handheld - NO Extensive Additional Documentation
User defines every Function in ONE Tool.](https://image.slidesharecdn.com/profibus-130609070921-phpapp01/85/Industrial-Networking-Profibus-7-320.jpg)
![PROFIBUS Basics
Date 09/06/00, Page 20
PROFIBUS Basics
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High-Speed Data Exchange Timing
Typical Cycle Time - Each Station With 2 Byte I/O
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Industrial Networking - Profibus
- 1. PROFIBUS Basics Date 09/06/00, Page 1 PROFIBUS Basics s Active Stations Passive Stations (Field Devices) PLC PC PROFIBUS
- 2. PROFIBUS Basics Date 09/06/00, Page 2 PROFIBUS Basics s All PROFIBUS services High Speed Data Exchange Peer to Peer Hazardous Area can be used together in one network Therefore Communication is Transparent for the User Same Cable and Components for High Speed Data Exchange and Peer to Peer
- 3. PROFIBUS Basics Date 09/06/00, Page 3 PROFIBUS Basics s High-Speed Data Exchange Features Same priority for all field devices Communication is permanent & cyclic Amount of data specified during configuration Only one master can write to outputs (safety aspect) Acyclic communication to field devices possible by using extended functions (DP Extended/DPV1) Alarm acknowledgment Up to 244 bytes input AND 244 bytes output data per field device Fastest fieldbus system (up to 12Mbaud)
- 4. PROFIBUS Basics Date 09/06/00, Page 4 PROFIBUS Basics s System Configuration PLC PROFIBUS GSD GSD GSD GSD GSD GSD Plug & Play With Electronic Device Data Sheets PROFIBUS Configuration Tool Electronic Device Data Sheets (GSD, GSE, GSF, GSG, GSI, GSP, GSS Files)
- 5. PROFIBUS Basics Date 09/06/00, Page 5 PROFIBUS Basics s High-Speed Data Exchange - Startup Sequence Power ON/ Reset Power ON/Reset of Master or Slave Parameterization Download of Parameters into the Field Device (selected during Configuration by the User) I/O Configuration Download of I/O Configuration into the Field Device (selected during Configuration by the User) Data Exchange Cyclic Data Exchange (I/O Data) and Field Device reports Diagnostics
- 6. PROFIBUS Basics Date 09/06/00, Page 6 PROFIBUS Basics s High-Speed Data Exchange - Parameterization Master Slave Features Implemented in Device Described in GSD File Processed by Configuration Tool Selected at Configuration Examples: Enable Channel Diagnostic Operation Range for Analog Channels (e.g. ±10V or 0..10V) Fail Safe Behavior (e.g. Hold Last Value) Parameter Download (up to 244 bytes) = Parameterization Data = Confirmation (Data Received)
- 7. PROFIBUS Basics Date 09/06/00, Page 7 PROFIBUS Basics s Parameterization (continued) Parameter selection with Configuration Tool jsdfehrgihw[orijth]ewj]ypokjeky gadfgsadfhsfghjjsffghsfgh fdhsdldajhtviertivetvert 34524 575687356nj8467knggnhngjt rby5yik57859mnnbvt456hn, g76nkbvijyuftisdt0iewryt9eiuoriy rywkrowrgowrtohworthorthwrth rthwrthrwthtryjtyjyuky tyjy7u79jtyu568566ut rtjhyuiuikujkhyjiyuiyuii thjyukiuio7ujtyujytuoiuky tyjyukuikyukuiluiliuioliuiluiil 6buhyijtiu8o67m8m747567n8 567n75567nm78m78,om87o, 56nu78m,,9o,0p.90.p;0;.;’-;/ jsdfehrgihw[orijth]ewj]ypokjeky gadfgsadfhsfghjjsffghsfgh fdhsdldajhtviertivetvert 34524 575687356nj8467knggnhngjt rby5yik57859mnnbvt456hn, g76nkbvijyuftisdt0iewryt9eiuoriy rywkrowrgowrtohworthorthwrth rthwrthrwthtryjtyjyuky tyjy7u79jtyu568566ut rtjhyuiuikujkhyjiyuiyuii thjyukiuio7ujtyujytuoiuky tyjyukuikyukuiluiliuioliuiluiil 6buhyijtiu8o67m8m747567n8 567n75567nm78m78,om87o, 56nu78m,,9o,0p.90.p;0;.;’-;/ Fewer DIP Switches - NO Handheld - NO Extensive Additional Documentation User defines every Function in ONE Tool.
- 8. PROFIBUS Basics Date 09/06/00, Page 8 PROFIBUS Basics s High-Speed Data Exchange - Configuration Master Configuration Download (up to 244 bytes) = Configuration Data = Confirmation (Data Received) Possible I/O Selections described in GSD File Processed by Configuration Tool Selected at Configuration Examples 8DI (1 Byte), 8DO (1 Byte) 2AI (2 Words), 2AO (2 Words) RS232 Interface, Counter Module Slave
- 9. PROFIBUS Basics Date 09/06/00, Page 9 PROFIBUS Basics s Configuration Tool (continued) I/O selection with Configuration Tool
- 10. PROFIBUS Basics Date 09/06/00, Page 10 PROFIBUS Basics s PROFIBUS Demo Parameter & I/O Selection Parameter & I/O Selection
- 11. PROFIBUS Basics Date 09/06/00, Page 11 PROFIBUS Basics s High-Speed I/O - Data Exchange & Diagnostics Master Slave = Output Data = Input Data Master Slave Slave indicates diagnostics to report Data Exchange (up to 244 bytes) = Diagnostic Indicator
- 12. PROFIBUS Basics Date 09/06/00, Page 12 PROFIBUS Basics s Data Exchange & Diagnostics (continued) Master Slave = Diagnostic Request = Diagnostic Response Master Slave Data Exchange (up to 244 bytes) Diagnostic Request and Response (up to 244 bytes)
- 13. PROFIBUS Basics Date 09/06/00, Page 13 PROFIBUS Basics s Diagnostic Response (continued) 6 Bytes Mandatory Header Header Header Device Related (Optional) Identifier Related (Optional) Channel Related (Optional) Up to 244 Bytes e.g. wrong configuration e.g. no load power e.g. module #4 has diagnostic e.g. wire break or short circuit
- 14. PROFIBUS Basics Date 09/06/00, Page 14 PROFIBUS Basics s High-Speed Data Exchange - Fail Safe What happens if my bus fails: valve open, valve closed, valve 1/2 open…??? Optional feature Fail Safe specifies behavior of Outputs in case of Communication Loss Optional feature Fail Safe specifies behavior of Outputs in case of Communication Loss
- 15. PROFIBUS Basics Date 09/06/00, Page 15 PROFIBUS Basics s Fail Safe (continued) Optional Feature for Field Devices Defined in Electronic Device Data Sheet Manufacturer has the capability to allow the End User to specify the action on loss of communication Hold outputs at the last value received (e.g. valve 1/2 open) Set outputs to a specified value (e.g. open or close valve completely) User defines action during Parameterization
- 16. PROFIBUS Basics Date 09/06/00, Page 16 PROFIBUS Basics s Fail Safe (continued)
- 17. PROFIBUS Basics Date 09/06/00, Page 17 PROFIBUS Basics s PROFIBUS Demo Diagnostics & Fail Safe Diagnostics & Fail Safe
- 18. PROFIBUS Basics Date 09/06/00, Page 18 PROFIBUS Basics s High-Speed Data Exchange Timing 10 Stations With 2 Byte I/O (160 In/Output Signals) Bus Cycle Time 0.8ms
- 19. PROFIBUS Basics Date 09/06/00, Page 19 PROFIBUS Basics s High-Speed Data Exchange Timing 10 Stations With 128 byte I/O (10,240 In/ Output Signals) Bus Cycle Time 2.0ms
- 20. PROFIBUS Basics Date 09/06/00, Page 20 PROFIBUS Basics s High-Speed Data Exchange Timing Typical Cycle Time - Each Station With 2 Byte I/O 0.3 0.5 2.1 8.8 2.0 20.5 1.5 0.8 3.3 2.00.9 6.1 4.6 7.7 14.1 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 1 5 10 20 30 [Number of Slaves] [ms] 12MBaud 1.5MBaud 500kBaud
- 21. PROFIBUS Basics Date 09/06/00, Page 21 PROFIBUS Basics s PROFIBUS Summary Extensive Parameterization Features Extensive Diagnostic Features Fail-Safe Behavior Deterministic Fast (Up to 12 MBaud) Safe and Reliable Easy Configuration Capabilities for Complete Plant Solution from Cell to Bit Level